This primary source comes from the Records of the Office of the Chief Signal Officer.
National Archives Identifier:
530492Full Citation: Seddon, James A., Secretary of War; half-length, seated; ca. 1860 - 1865; Records of the Office of the Chief Signal Officer, Record Group 111. [Online Version, https://www.docsteach.org/documents/document/seddon-james-a-secretary-of-war-halflength-seated, May 12, 2024]